Home / 80,182.12-120,331.50-35,858.92

Finding the Fourth Proportional to 80,182.12, 120,331.50 and 35,858.92

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Solution

The fourth proportional to 80,182.12, 120,331.50 and 35,858.92 is: 53,814.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,182.12 : 120,331.50 = 35,858.92 : x
  2. Step 2: Convert to fraction form
    80,182.12/120,331.50 = 35,858.92/x
  3. Step 3: Cross multiply
    80,182.12x = 120,331.50 × 35,858.92
  4. Step 4: Simplify right side
    80,182.12x = 4,314,957,631.98
  5. Step 5: Solve for x
    x = 4,314,957,631.98/80,182.12
  6. Step 6: Final answer
    x = 53,814.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.